Hang tight while we fetch the video data and transcripts. This only takes a moment.
Connecting to YouTube player…
Fetching transcript data…
We’ll display the transcript, summary, and all view options as soon as everything loads.
Next steps
Loading transcript tools…
Characteristics of database approach | characteristics of DBMS | DBMS Characteristics | QuickCS | YouTubeToText
YouTube Transcript: Characteristics of database approach | characteristics of DBMS | DBMS Characteristics
Skip watching entire videos - get the full transcript, search for keywords, and copy with one click.
Share:
Video Transcript
Video Summary
Summary
Core Theme
The database approach offers significant advantages over traditional file systems through four key characteristics: self-describing nature, insulation between programs and data with data abstraction, support for multiple data views, and concurrent data sharing with multi-user transaction processing.
Mind Map
Click to expand
Click to explore the full interactive mind map • Zoom, pan, and navigate
who uses shouldn't be able to book one
single seed in the name of two different
users all right this is known as
concurrency control and this is the
fourth characteristic of the database
approach hey guys welcome to a second
DBMS tutorial in today's tutorial we'll
be learning what are the characteristics
of database approach then we'll look at
in detail explanation of each
characteristic alright let's it started
so first thing what are the
characteristics of database approach now
there are two approaches file system
approach and database approach today
we'll be learning about characteristics
of database approach so there are total
four characteristics of database
approach first characteristic is called
self-describing nature of database
system the second one is called
insulation between programs and data and
data abstraction third one is called
support of multiple views of the data
and the final and the fourth one is called
called
sharing of data and multi-user
transaction processing alright so these
are the four characteristics that you
need to understand now we will look at
them in details one by one so let's look
at the first characteristic
self-describing nature okay now what do
you mean by self describing each other
what do you think it means
okay describing nature means the
database system in DBMS that is it does
not only contain the database okay the
database system does not only contain
the database but also the information
about the constraints and the structure
of the database okay so it is describing
itself like what is the structure of the
database what are the constraints of the
database and so on so this is called
self describing nature of DBMS this is
the first characteristic now where is
this information stored and what is this
information odd so the information about
constraints and the structure of the
database is known as the metadata now
where is this metadata store metadata is
stored in something called as catalog
okay so it is stored in catalog now why
is this information stored in catalog
now you need to understand that a
general database system is created not
for some specific application but for
uses okay so then you create something
for a general use the developers of the
application or the program or the user
needs to know about the structure and
the constraints of the database so that
they can create the program around it
okay or specifically for it
so hence to get this information about
the structure and constraints of the
database they need to reference the
metadata hence it is stored in the
catalog of the database now let's look
at the second characteristic the second
characteristics of DBMS approach is
known as insulation between programs and
data and data abstraction okay so what
do you mean by insulation between
programs and data and data abstraction
so in a file system what happens is
suppose you want to make some change in
the file system database you have to
make this change in the entire program
just because you make the change in the
database it won't be reflected in the program
program
okay so what you have to do in the file
system is you have to change the entire
program based on the change that you do
in the database but it's not the same
case in DBMS in DBMS suppose you want to
add another piece of data that is data
type let's say date of birth or
something like that okay all you have to
do is go to the catalog and add another
data type called data world and the
whole changes will be reflected in the
entire program you don't have to go and
edit the entire program so what does
that mean is by changing the data in the
database the program does not get
affected okay so that's why it's called
insulation between programs and data and
data abstraction all right now let's
look at a third characteristic support
of multiple views of the data so before
learning the support of what do you mean
by support of multiple views you need to
know what our views of the data so a
database has multiple users of course
okay each user may need different view
of the database now what do you mean by
view of the database suppose there are
there is a database of students
information okay now a student can
access the database that is view the
database okay and he might get his
attendance percentage or he might get
his the schools that he has code in a
subject whereas a teacher
also has the access to the same database
okay now the teacher wants to get the
information about contact details of the
parents that are there in the database
but a student cannot get the same
information as the teachers that is a
student does not have that privilege is
that a teacher should have so there is a
different view for a student there is a
different view for the teacher another
thing that you need to understand that
you know view the information that is
there that that is shown is either
derived from the database or it is
stored in the database so basically
let's say there is some information like
the marks of the students okay now
suppose a teacher wants to find what are
the what is the average score of the
entire class okay out of 100 now she
will just ask or query the database for
average score of the students she will
get the result out okay now the teacher
does not know whether the information is
stored in the database or it is derived
from the database that is the teacher
does not know whether the average score
of the class is stored in the database
or the average score is calculated by
the database and then displayed so that
is something known as support of
multiple views of the data so multiple
views means different user will have
different you of the data based on the
privileges that are there to the user so
let's look at the third characteristics
sharing of data and multi-user
transaction processing all right
now sharing of data and multi-user
transaction processing what do you mean
by that a multi-user DBMS as the name
suggests has multiple uses it must allow
multiple users to access and use the
database at the same time so it should
allow multiple users to use the data at
the same time this is a must when
multiple applications use a single
database to store and integrate in one
single database so this is a necessity
okay sharing and sharing of data and
multi-user transaction processing this
is a characteristics that a DBMS must
have so that it becomes useful for
multiple users okay now what do you need
okay to do this to achieve this a
concurrency control software must be
equated alright so what do you mean by a
concurrency control software okay a
concurrency control soft
is a software that will allow a user to
access the data at the same time whereas
other user will be able to use the
database but not the same data okay once
one user commits the changes then only
the other person can come and add new
changes or edit it
okay so this is known as concurrency
control now for this you have
concurrency control software's they are
also known as OLTP okay so why this
concurrency control software exists they
exist so that whenever a user uses the
data it should be correct okay and
update it they shouldn't be confusion
like right now this data was X after two
seconds the data is Y which one to
choose okay
hence once a user commits the changes
then only other person can use it this
is also known as acid properties that is
we will talk about acid properties
afterwards right not right now let's
look at an example so that you
understand better suppose you are trying
to book a ticket on an online ticket
booking website for a bus okay this is
the seating arrangement for the bus and
all seats are available when you go okay
no you're like okay fine all seats are
variable I will come after five minutes
I will books typically after five
minutes you come you see some seats have
been booked that are there in the red
have already been booked now you are
like okay fine it's okay I'll book seat
number one okay so you select seat
number one we will see seat number one
selected at the same time okay someone
else also comes online and he wants to
book seat number one as well but the
system won't allow it
the system will show seat one is not
available kindly select another see to
that person
alright you have not yet completed the
booking you have just select the book
you just selected the seat okay but
still the user won't be able to select
the same seat as you okay this is known
as concurrency control now if you book
the ticket
it's all fine the seating arrangement
will look the same but suppose if you go
in to book the ticket okay you're like
okay fine I'll book the next day's
ticket I won't select this safe so you
cancel the booking now the CDs are get
available so after some time it depends
on the website maybe 15 is softener the
seat is going to be made available again
to users
for booking now why this exists this
exists because two users shouldn't be
able to book one single seed in the name
of two different users alright this is
known as concurrency control and this is
the fourth characteristic of the
database approach so that's it for today
guys thank you very much for watching if
you have any queries feel free to ask
them in the comment section below if you
have any suggestions please write them
in the comment section below if you like
the video please share it with your
friends and subscribe to my channel
Click on any text or timestamp to jump to that moment in the video
Share:
Most transcripts ready in under 5 seconds
One-Click Copy125+ LanguagesSearch ContentJump to Timestamps
Paste YouTube URL
Enter any YouTube video link to get the full transcript
Transcript Extraction Form
Most transcripts ready in under 5 seconds
Get Our Chrome Extension
Get transcripts instantly without leaving YouTube. Install our Chrome extension for one-click access to any video's transcript directly on the watch page.
